Multiple Appliances, Multiple Sensors, Multiple Projects

Using this project you can control upto 4 appliances over internet, monitor the value of 4 analog sensors from anywhere in the world and not only that, this project has built in temperature and humidity sensor so you can get the data of that as well on your smart phone. So let’s see how to make it.

Components Required

  1. ESP8266 12e development board(NodeMCU) (http://amzn.to/2BKS7cv)
  2. 4 x 5V Relays (http://amzn.to/2ChddQC)
  3. 4 x 1n4007 Diode (http://amzn.to/2EM4IuD)
  4. 4 x BC547 transistors (http://amzn.to/2oiTbfV)
  5. 4 x 330ohm resistors (http://amzn.to/2ojg8zN)
  6. 16 channel analog multiplexer module (http://amzn.to/2mLwlfl)
  7. PIR motion sensor (http://amzn.to/2EK1OX2)
  8. MQ135  sensor (https://amzn.to/2SKFBR4)
  9. Sound Sensor (http://amzn.to/2HCYO0z)
  10. Light Sensor (http://amzn.to/2CcBAPr)
  11. DHT11 Temperature and Humidity sensor(http://amzn.to/2sPh3fO)
  12. 7805 Regulator IC (http://amzn.to/2CdUvcq)
  13. 9V Power Adapter (http://amzn.to/2CfffAL)
  14. 4 x 2 pin PCB mount screw terminal (http://amzn.to/2EM5Luz)

Connection Diagram

Connections for Relay
Connections for Sensors

PCB Design and Gerber File

As there were a lot of connections in this project, I just designed my own custom PCB for it on EasyEDA.com . Now if you want the Gerber file or the design of PCB for this project, then you can get it by going to my EasyEDA account.

You can just click here and this will re-direct you to the page where you can find the design of this PCB.


I have uploaded the demo code used for this project on my GitHub Account which you can download and use it by clicking here.

Tutorial Video

I have recorded and uploaded full tutorial video for this project in which I have explained the code as well. Kindly watch that out to learn and make your own project